CN108150314A - Turbine cylinder and the turbine shroud manifold with the integrated form by-passing valve for special exhaust gas recycling engine - Google Patents

Turbine cylinder and the turbine shroud manifold with the integrated form by-passing valve for special exhaust gas recycling engine Download PDF

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Publication number
CN108150314A
CN108150314A CN201711220401.8A CN201711220401A CN108150314A CN 108150314 A CN108150314 A CN 108150314A CN 201711220401 A CN201711220401 A CN 201711220401A CN 108150314 A CN108150314 A CN 108150314A
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CN
China
Prior art keywords
egr
conduit
manifold
special
turbine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711220401.8A
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Chinese (zh)
Inventor
E·J·基廷
P·纳努亚
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GM Global Technology Operations LLC
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GM Global Technology Operations LLC
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Publication of CN108150314A publication Critical patent/CN108150314A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02EGR systems specially adapted for supercharged engines
    • F02M26/04EGR systems specially adapted for supercharged engines with a single turbocharger
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/02Gas passages between engine outlet and pump drive, e.g. reservoirs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12Control of the pumps
    • F02B37/18Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12Control of the pumps
    • F02B37/18Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • F02B37/183Arrangements of bypass valves or actuators therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02EGR systems specially adapted for supercharged engines
    • F02M26/04EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02EGR systems specially adapted for supercharged engines
    • F02M26/09Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/12Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/16Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/34Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with compressors, turbines or the like in the recirculation passage
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/42Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
    • F02M26/43Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65Constructional details of EGR valves
    • F02M26/70Flap valves; Rotary valves; Sliding valves; Resilient valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65Constructional details of EGR valves
    • F02M26/71Multi-way valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08Other arrangements or adaptations of exhaust conduits
    • F01N13/10Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Supercharger (AREA)

Abstract

There is provided herein turbocharger manifold and turbocharger and including turbocharger manifold and the exhaust gas of turbocharger recycling (EGR) system.The manifold includes main body, at least one non-dedicated EGR conduit, special EGR conduit and the EGR by-passing valves being in fluid communication with special EGR conduit, wherein special EGR conduit and at least one non-dedicated EGR conduit in EGR by-passing valves downstream converge.Special EGR conduit can be in fluid communication with EGR conduit.EGR by-passing valves optionally allow or prevent the fluid communication between special EGR conduit and EGR conduit.EGR by-passing valves may include two-way valve, have the door that the second position can be moved to from first position.The manifold may include the one-piece construction with turbocharger turbine housing.

Description

Turbine cylinder and with for special exhaust gas recycling engine integrated form by The turbine shroud manifold of port valve
Background technology
During the burn cycle of internal combustion engine (ICE), air/fuel mixture is supplied to the cylinder of ICE.Air/combustion Material mixture is compressed and/or lights and burn to provide output torque.Many oil and gasoline ICE are (all using supercharging device Such as, the turbocharger of exhaust gas turbine driving), to enter compressed air stream before the inlet manifold of engine in air-flow, to carry High power and efficiency.Specifically, turbocharger uses centrifugal gas compressor, and can be in addition real under environment atmospheric pressure Existing situation is compared, which is pressed into more air (that is, oxygen) combustion chamber of ICE.It is pressed into ICE The additional mass of oxygen-containing air improve the volumetric efficiency of engine, allow its more fuel that burn in given cycle, Thus it generates more high-power.
Invention content
Aspect accoding to exemplary embodiment provides a kind of turbocharger turbine housing manifold.The manifold may include Main body, at least one non-dedicated exhaust gas recycling (EGR) pipeline, special EGR conduit and it is in fluid communication with special EGR conduit EGR by-passing valves.Special EGR conduit can be converged at least one non-dedicated EGR conduit in EGR by-passing valves downstream.Special EGR conduit It can be in fluid communication with EGR conduit.EGR by-passing valves optionally allow or prevent the stream between special EGR conduit and EGR conduit Body connects.EGR by-passing valves may include two-way valve, have the door that the second position can be moved to from first position, wherein at door When first position, special EGR conduit is in fluid communication, and at least one non-dedicated EGR conduit when door is in the second position, Special EGR conduit is in fluid communication with EGR conduit.The manifold can further comprise waste gate valve, be arranged under EGR by-passing valves Trip.
Other side accoding to exemplary embodiment, turbocharger may include compressor, be arranged on compression case In vivo;Turbine is mechanically coupled to compressor and is arranged in turbine shroud.Turbine shroud may include thering is multiple pipelines Manifold, these pipelines be focused in the manifold and with turbine establish be in fluid communication, and at least one pipeline can be with EGR The special EGR conduit of by-passing valve.At least one pipe special can be converged at least one remaining pipeline in EGR by-passing valves downstream. Manifold and turbine shroud can be that integral type constructs.EGR by-passing valves optionally allow or prevent special EGR conduit and turbine it Between fluid communication.One or more of at least one special EGR conduit can be in fluid communication with EGR conduit.EGR by-passing valves can Selectively allow for or prevent the fluid communication between one or more special EGR conduits and EGR conduit.EGR by-passing valves can wrap Two-way valve is included, there is the door that the second position can be moved to from first position, wherein when door is in first position, special EGR Pipeline is in fluid communication, and at least one non-dedicated EGR conduit when door is in the second position, special EGR conduit and EGR conduit It is in fluid communication.The turbocharger can further comprise waste gate valve, be arranged on EGR by-passing valves downstream.
Aspect accoding to exemplary embodiment, egr system may include:Internal combustion engine, the internal combustion engine have inlet manifold, should be into Gas manifold configuration is to deliver the air to multiple cylinders, and one in plurality of cylinder is special EGR cylinders;EGR conduit, It is in fluid communication with inlet manifold;And turbocharger, with turbine, which is arranged in turbine shroud and via whirlpool Manifold is taken turns with multiple cylinders to be in fluid communication.Turbo-manifold may include:Main body;At least one non-dedicated EGR conduit, is arranged on master In vivo;Special EGR conduit is arranged in main body and is in fluid communication with special EGR cylinders and EGR conduit;And EGR by-passing valves, It is in fluid communication with special EGR conduit.Special EGR conduit can converge at least one non-dedicated EGR conduit in EGR by-passing valves downstream It is poly-.EGR by-passing valves optionally allow or prevent the fluid communication between special EGR conduit and EGR conduit.EGR by-passing valves It may include two-way valve, there is the door that the second position can be moved to from first position, wherein when door is in first position, it is special EGR conduit is in fluid communication, and at least one non-dedicated EGR conduit when door is in the second position, special EGR conduit and EGR Catheter fluid connects.Manifold and turbine shroud can be that integral type constructs.The system can further comprise conduit, with one or more At least one of a non-dedicated EGR cylinders and at least one of non-dedicated EGR conduit fluid communication.The system can be further Including conduit, it is in fluid communication with special EGR cylinders and special EGR conduit.
From below in the detailed description of exemplary embodiment and attached drawing, other purposes of exemplary embodiment, advantage and Novel feature will be apparent.
Description of the drawings
Fig. 1 is the schematic diagram according to the combustion engine unit with the recycling of special exhaust gas of one or more embodiments.
Fig. 2 is the perspective view according to the turbocharger of one or more embodiments.
Fig. 3 A are the perspective views according to the turbocharger turbine housing manifold of one or more embodiments.
Fig. 3 B are the sectional views according to the turbocharger turbine housing manifold of one or more embodiments.
Specific embodiment
This document describes embodiment of the disclosure.It is to be understood, however, that disclosed embodiment be only example and its Various and alternative form can be presented in its embodiment.Schema is not drawn necessarily to scale;Certain features can be exaggerated or minimized To show the details of particular elements.Therefore, specific structure and function details disclosed herein are not construed as limiting, and only solve It is interpreted as instructing those skilled in the art's representative basis using the present invention in various ways.Such as this field general technology people Member says it will be appreciated that can be combined in one or more of the other schema with reference to each feature that any one schema illustrates and describes Bright feature with generate not yet explicitly illustrate or describe embodiment.Illustrated feature combination provides the representative for typical case Property embodiment.However, specific application or embodiment can it is expected each combination of the feature consistent with the introduction of the disclosure and repair Change.
There is provided herein turbocharger turbine housing manifold, turbocharger and including turbocharger turbine housing Manifold and the exhaust gas of turbocharger recycling (EGR) system.Manifold respectively includes one or more EGR by-passing valves, passes through Reduce the efficiency that turbocharger is improved by the pressure and heat loss of exhaust gas therein.Increase by EGR by-passing valves in turbine Construction and position in depressor manifold or turbine shroud, can improve efficiency.
Refer to the attached drawing, wherein identical reference numeral is used to identify the similar or identical component in various views, Fig. 1 signals Ground illustrates engine pack 10, including internal combustion engine 12, gas handling system 14 and exhaust system 16.Gas handling system 14 and exhaust system System 16 can respectively be in fluid communication, and can pass through 18 connection mechanically to each other of turbocharger with internal combustion engine (ICE) 12 respectively.
ICE 12 includes the cylinder block 11 for limiting multiple cylinders 20 (being referred to as cylinder 1 to 4).ICE 12 can be spark ignition Or compression ignition design.For simplicity, ICE 12 is illustrated as in-line arrangement four-cylinder arrangement.It is to be understood, however, that this Introduction is suitable for any amount of piston-cylinder arrangement and the configuration of various reciprocating engines, and including but not limited to V-type is started Both machine, in-line engine and pancake engine and the configuration of overhead cam and unitary cam.In certain specific realities It applies in example, ICE 12 may include three cylinder of in-line arrangement or six cylinder engine.In other specific embodiments, ICE 12 can especially include Engine is configured in V-6, V-8, V-10 and V-12.The piston that each cylinder 20 may include being configured to move back and forth wherein (does not show Go out), wherein cylinder 20 and its corresponding piston can limit combustion chamber.Each respective cylinder 20 may include one or more fuel sprays Liquid fuel is optionally introduced into each cylinder to burn (as aerosol) by emitter 29.Each cylinder 20 can With 14 selective fluid communication of gas handling system to receive the air of fresh/oxygenation, and cylinder 20 can be selected with exhaust system 16 It is in fluid communication to discharge combustion by-products to property.Each in cylinder 1,2,3 and 4 is respectively via 21,22,23 and of dedicated conduits 24 will 40 discharge ICE 12 of exhaust.Exhaust gas 40 then can be by one or more after-treatment devices (such as, device 42) with useless Gas is catalyzed and/or removes certain by-products before leaving exhaust system 16 via tail pipe 44.
Gas handling system 14 usually may include fresh air inlet 15, EGR mixer 26, charger-air cooler 28, throttling Valve 30 and inlet manifold 32.As can be appreciated, during the operation of ICE 12, fresh air 34 can be by gas handling system 14 via fresh Air intake 15 is absorbed from air or from related air purifier component.Throttle valve 30 may include controllable baffle, configuration To be selectively adjusted the total flow for the air for by gas handling system 14 and finally entering cylinder 20 via inlet manifold 32.Increase Pressure aerial cooler 28 is illustrated as receiving such as by the combination of the EGR gases 54 that EGR mixer 26 provides and fresh air 34.At certain In a little embodiments, gas handling system 14 can additionally or alternatively include:One or more special cooler for recycled exhaust gas (not shown), with EGR conduit 52 is in fluid communication and is configured to cool down EGR gases 54 before EGR mixer 26;And intercooler (does not show Go out), it is in fluid communication and is configured to cool down before EGR mixer 26 fresh air 34 of compression with conduit 66.Specific In embodiment (not shown), charger-air cooler 28 is located at the upstream of EGR mixer 26.
As described above, gas handling system 14 and exhaust system 16 can carry out mechanical communication by turbocharger 18.In Fig. 2 Shown, turbocharger 18 includes the turbine 60 being in fluid communication with exhaust system 16 and the compression being in fluid communication with gas handling system 14 Machine 62.Turbine 60 and compressor 62 can be mechanically coupled via public rotatable shaft 64, which extends through bear box 67.Turbine 60 may be provided in turbine shroud 61, and similarly, and compressor 62 may be provided in compressor housing 63.It is operating In, turbine 60 receives exhaust gas 40 via manifold 70.Specifically, manifold 70 by exhaust gas 40 from the reception and registration of at least one of cylinder 1 to 4 To circumferential spiral case or snail volume 68.In certain embodiments, manifold 70 can be integrated with turbine shroud 61, such as integral type structure It makes.In certain embodiments, the integrated heat and the maximum of the pressure loss of providing of manifold 70 and turbine shroud 61 is reduced.Certain In other embodiments, manifold 70 is the one-piece construction detached with turbine shroud 61.Turbine 60 captures the kinetic energy from exhaust gas 40, And via 64 rotary compressor 62 of common axis.The volume limitation of exhaust gas 40 in turbine shroud 61 converts thermal energy into similarly The additional kinetic energy captured by turbine 60.For example, it can especially optimize spiral case 68 to realize conversion of the thermal energy to kinetic energy.
Then, compressor 62 sucked from entrance 15 via the rotation of common axis 64 fresh air 34 and compress it to The rest part of gas handling system 14.For example, compressed air can be conveyed to gas handling system 14 by compressor 62 via conduit 66.Exhaust gas 40 changeable flow and Li Ke influence can be applied the amount of the boost pressure to fresh air 34 by compressor 62, and then can shadow Sound can be transported to the amount of the oxygen of cylinder 20.In many cases it is required energy is farthest shifted from exhaust gas 40 To compressor 62.In some cases, the boost pressure applied by compressor 62 can be limited by optional waste gate valve 55.Waste gate Valve 55 can for example commutate exhaust gas 40 towards tail pipe 44 far from turbocharger turbine 60 via waste gate conduit 56, thus limit Boost pressure.For example, waste gate valve 55 can be activated via actuator 57.
Engine pack 10 include special egr system 50, can (for example, via EGR conduit 52) by EGR gases 54 from One or more specialized gas cylinders of ICE 12 are directly returned in gas handling system 14.For example, this recycling EGR gases 54 can be Mixed at EGR mixer 26 with fresh air 34, and can correspondingly diluted mixture oxygen content.Fire can be improved using EGR The efficiency of spark ignition engine.EGR can also reduce ignition temperature and NOx generations in ICE 12.By the whole of a cylinder 20 Whole exhaust gas of exhaust or less than all cylinders 20 return to air intake assembly 14 and are referred to herein as " special EGR ".Special EGR can Including wherein substantially whole exhaust gas of a cylinder 20 or less than all cylinders 20 are sent back to the embodiment of air intake assembly 14.
In general, manifold 70 includes having the main body of multiple pipelines assembled wherein, at least one in plurality of pipeline It is a to be specially in fluid communication with special EGR cylinders or multiple special EGR cylinders.Each pipeline in manifold 70 can specially with it is special Conduit (such as dedicated conduits 21 to 24) is connected or can be connected with multiple dedicated conduits (such as conduit 22 and 23).Pipe special 21 to 24 be optional, and is only used for realizing between manifold channels and the cylinder (such as cylinder 1 to 4 or ICE 12) of ICE It is in fluid communication.Show as shown in fig. 1, as non-limiting example, pipeline 21 ', 22 ', 23 ' and 24 ' respectively with pipe special 21, 22nd, 23 and 24 are in fluid communication, and the latter therein connects with corresponding 12 cylinders of ICE.In certain embodiments, it is one or more Optional dedicated conduits can converge before being in fluid communication with manifold channels.In other embodiments, manifold 70 can directly and ICE 12 cylinders connect.For example, manifold 70 can be directly fixed to cylinder block 11.Manifold bodies can be metal, carbon fiber or show height Other similar materials of thermal stability.
The conduit being specially in fluid communication in manifold 70 with special EGR cylinders or multiple special EGR cylinders is referred to alternatively as special EGR conduit.Therefore, as indicated, pipeline 24 ' includes special EGR conduit.In certain embodiments, manifold 70 is included therein remittance At least three poly- pipelines, in wherein at least three pipeline at least two but be special EGR conduit all or less than pipeline.EGR By-passing valve (such as EGR by-passing valves 71) is arranged in the special EGR conduits of one or more of manifold 70, for by exhaust gas from one A or multiple special EGR cylinders are bypassed to conduit 52.One or more EGR by-passing valves are configured such that in special EGR conduit Exhaust gas in one or more of exhaust gas of the contact from non-dedicated EGR conduit and turbocharger turbine (such as turbine 60) It is before capable of bypass to EGR conduit 52.For illustrative purposes, EGR by-passing valves 71 are illustrated as in the interior (warp with specialized gas cylinders 4 of pipeline 24 ' By optional dedicated conduits 24) and the fluid communication of pipeline 21 ', 22 ' and 23 '.The downstream side 71 ' of pipeline 24 ' and EGR by-passing valves 71 On pipeline 21 ', 22 ' and 23 ' converge, hereafter all pipelines are jointly in fluid communication with turbine 60.It is disclosed herein including collection Into the manifolds (such as manifold 70) of EGR by-passing valves pass through and reduce one or more specialized gas cylinders (such as cylinder 4) and increase with turbine The pressure drop of exhaust gas (such as exhaust gas 40) between depressor turbine (such as turbine 60) and heat loss improve turbocharger (such as Turbocharger 18) efficiency.The EGR by-passing valves 71 set herein are configured the cylinder between specialized gas cylinders and non-dedicated cylinder The geometry in path and volume variation minimize between turbine.
As illustrated in Figure 1, optional dedicated conduits 21,22,23 and 24 respectively with corresponding pipeline 21 ', 22 ', 23 ' and 24 ' are in fluid communication, these pipelines converge in manifold 70 exhaust gas 40 being delivered to turbine 60.Pipeline 22 ' and 23 ' is illustrated as With pipeline 21 ' and 24 ' convergence before converge, however it is such orientation be it is optional, and non-dedicated EGR conduit convergence any row Row should be considered to be within the scope of this disclosure.Cylinder 4 is illustrated as special EGR cylinders since it is associated with EGR by-passing valves 71, The EGR by-passing valves are arranged to be in fluid communication with pipeline 24 ', EGR conduit 52 and turbine 60.As needed, it is discharged from cylinder 4 Exhaust gas 40 can be conveyed to turbine 60 via EGR by-passing valves 71 or be diverted to EGR conduit 52.Under any operational circumstances, remaining vapour The exhaust gas 40 of cylinder 20 (that is, cylinder 1 to 3) is for example communicated to gas deflation assembly 16 via conduit 56 and 65.In other embodiments, Multiple cylinders but their 100% EGR gases 54 can be returned all or fewer than cylinder supplied to air intake assembly 14.For example, cylinder 1 Their 100% EGR gases 54 can be returned with 4 supplied to air intake assembly 14, and the exhaust gas 40 of cylinder 2 and 3 can be via exhaust Component 16 is discharged from ICE 12.In such embodiments, manifold 70 may include being arranged to and special EGR conduit 21 ' and 24 ' The single EGR by-passing valves (such as EGR by-passing valves 71) of fluid communication alternatively include two individual EGR by-passing valves, often A EGR by-passing valves are arranged to special EGR conduit 21 ' and 24 ' be in fluid communication respectively.In certain embodiments, it conduit 56 and leads Pipe 65 can converge in manifold 70.
Fig. 3 A illustrate the perspective view of the manifold being bound in turbine shroud 61 70.Fig. 3 B further illustrate manifold 70 Sectional view.Manifold 70 includes two-way EGR valve 71, including the door 72 that can be moved between first position 73 and the second position 74. Door 72 is configured to management pipeline 24 ' (special EGR conduit) and pipeline 21 ', pipeline 22 ', pipeline 23 ', turbine 60 and EGR conduit 52 One or more of between fluid communication.Management is in fluid communication and may include selectively allowing for, prevents or prevent fluid from connecting One or more of lead to.Door 72 can be controlled by such as EGR valve actuator 75, which can be actuated at door 72 Between first position 73 and the second position 74.When door 72 is in first position 73, EGR conduit 24 ' and pipeline 21 ', pipeline 22 ', one or more of pipeline 23 ' and turbine 60 fluid communication, and the interior exhaust gas of EGR conduit 24 ' can be communicated to turbine 60.When door 72 is in the second position 74, pipeline 24 ' is in fluid communication with EGR conduit 52, and the interior exhaust gas of EGR conduit 24 ' is passed Reach EGR conduit 52.Pipeline 22 ' and 23 ', pipeline 21 ' and 24 ' are illustrated as converging before turbine 60 is introduced into respectively.Ability Field technique personnel are it will be recognized that this configuration is optional, and any or all pipeline in the downstream of EGR valve 71 is in manifold 70 Convergence within the scope of this disclosure.
In certain embodiments, two-way EGR valve 71 can be replaced by two check valves, the two check valves are relative to special EGR conduit 24 ' is unidirectional and prevent from turbine 60, one or more non-dedicated EGR conduits 21 ' to 23 ' or EGR conduit 52 fluid is flowed along updrift side towards pipe special 24 ' or cylinder 4.Single check valve can for example occupy 73 He of first position Each in the second position 74.Each check valve can be by actuator activation that is identical or separating.
Although described above is exemplary embodiment, it is not intended to the description of these embodiments and is covered by claims Be possible to form.It is descriptive vocabulary rather than restricted vocabulary with vocabulary in the description, and should be appreciated that Various change can be carried out without departing from the spirit and scope of the present invention.As it was earlier mentioned, the feature of each embodiment can group Being synthetically formed can the indefinite further embodiment of the present invention described or illustrate.Although each embodiment is just one or more It may have been depicted as providing advantage or better than other embodiments or prior art embodiment for required characteristic, but ability Domain those skilled in the art recognize, can sacrifice one or more features or characteristic to realize and depend on concrete application and embodiment Expectation total system attribute.These attributes may include (but not limited to) cost, intensity, durability, life cycle cost, market Merchantability, appearance, packaging, size, service ability, weight, manufacturability, convenient for assembling etc..Thus, with regard to one or more characteristics For, be described as needed for property not as good as other embodiments or the embodiment of prior art embodiment not outside the scope of the present disclosure And can be required for specific application.

Claims (10)

1. a kind of turbocharger, including:
Compressor is arranged in compression case body;And
Turbine is mechanically coupled to the compressor and is arranged in turbine shroud, wherein the turbine shroud includes tool There is the manifold of multiple pipelines, the multiple pipeline, which is converged in the manifold and established with the turbine, to be in fluid communication, and institute It is special exhaust gas recycling (EGR) pipeline for having EGR by-passing valves to state one in pipeline.
2. a kind of turbocharger turbine manifold, the manifold include:
Main body;
At least one non-dedicated exhaust gas recycling (EGR) pipeline;
Special EGR conduit;And
The EGR by-passing valves being in fluid communication with the special EGR conduit, wherein under the special EGR conduit and the EGR by-passing valves At least one non-dedicated EGR conduit convergence of trip.
3. a kind of exhaust gas recycles (EGR) system, the system comprises:
Internal combustion engine, with inlet manifold, the inlet manifold is configured for delivering the air to multiple cylinders, wherein described One in multiple cylinders is special EGR cylinders;
EGR conduit is in fluid communication with the inlet manifold;And
Turbocharger, with turbine, the turbine be arranged in turbine shroud and via turbo-manifold with it is the multiple Each fluid communication in cylinder, the turbo-manifold include:
Main body;
At least one non-dedicated EGR conduit, is arranged in the main body;
Special EGR conduit is arranged in the main body and is in fluid communication with the special EGR cylinders and the EGR conduit;And
The EGR by-passing valves being in fluid communication with the special EGR conduit, wherein under the special EGR conduit and the EGR by-passing valves At least one non-dedicated EGR conduit convergence of trip.
4. turbocharger according to any one of the preceding claims, turbocharger turbine manifold or egr system, Described in manifold and turbine shroud be one-piece construction.
5. turbocharger according to any one of the preceding claims, turbocharger turbine manifold or egr system, Described in special EGR conduit and EGR conduit be in fluid communication.
6. turbocharger according to any one of the preceding claims, turbocharger turbine manifold or egr system, Described in EGR by-passing valves optionally allow or prevent the special EGR conduit and the special EGR conduit or the EGR Fluid communication between conduit.
7. turbocharger according to any one of the preceding claims, turbocharger turbine manifold or egr system, Described in EGR by-passing valves include two-way valve, the door of the second position can be moved to from first position by having, wherein at the door When the first position, the special EGR conduit connects with the turbine or at least one non-dedicated EGR conduit fluid It is logical, and when the door is in the second position, the special EGR conduit is in fluid communication with the EGR conduit.
8. turbocharger, turbocharger turbine manifold or egr system according to any one of the preceding claims, into One step includes waste gate valve, and the waste gate valve is arranged on the downstream of the EGR by-passing valves.
9. turbocharger according to any one of the preceding claims, turbocharger turbine manifold or egr system, into One step includes conduit, at least one of the conduit and one or more of non-dedicated EGR cylinders and the non-dedicated EGR At least one of pipeline fluid communication.
10. turbocharger according to any one of the preceding claims, turbocharger turbine manifold or egr system, Further comprise conduit, the conduit is in fluid communication with the special EGR cylinders and the special EGR conduit.
CN201711220401.8A 2016-12-02 2017-11-28 Turbine cylinder and the turbine shroud manifold with the integrated form by-passing valve for special exhaust gas recycling engine Pending CN108150314A (en)

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